Sunan An-Nasa'i
Hadith #521
It was narrated that Abu Basrah Al-Ghifari said:""The Messenger of Allah (ﷺ) led us in praying 'Asr in Al-Mukhammas. He said: 'This prayer was enjoined upon those who came before you, but they neglected it. Whoever prays it regularly will have a two-fold reward, and there is no prayer after it until the Shahid appears."" And the Shahid is ""the star."" [1] [1] This is a statement of one of the narrators, and Allah knows best